Chinese manufcaturers cannot be trusted. They can deliver a first batch according to specification. After that they can outsource to other small shpos where they do not do quality at all, copied parts that look like from the approved manufacturer.
I know since I work on global company producing industrial machines with mechanical, electro mechanical, control system with all electronics connected with cabling. With production in China, Europe and USA, too many parts manufactured in China to save money. I have many examples of more cost with junk parts that must be replaced after delivery.
A good approved part can be replaced by junk (copies) to save money. It will be very expensive in the end when the quality sucks. Most people do not like the label, Made in China. Made in USA or an European industrial country is much better. Producing high quality is unfortunately not in the Chinese soul.